NASHVILLE – Tennessee Bureau of Investigation agents charged a Cannon County High School teacher Thursday with illegally purchasing and distributing prescription drugs.

TBI special agents, along with Cannon County Sheriff’s investigators, started an investigation recently involving Shannon Gannon, 41.

During the investigation, agents said they developed information that revealed Gannon bought and distributed prescription narcotics. Agents said whether any of the transactions happened at the school or involved students remained part of the open investigation.